Ingredient · E233

Thiabendazole

Source
Not animal-derived
Allergen
No
Role in food
Thiabendazole is used as a post-harvest treatment to control fungal diseases on certain fruits, …

What is Thiabendazole?

Thiabendazole is a synthetic organic compound. It is primarily used as a fungicide and parasiticide. In food applications, it is applied post-harvest to prevent spoilage.

Is Thiabendazole vegan?

Thiabendazole is not animal-derived. Products that contain it can still include other animal-derived ingredients, so check the full ingredient list.

Is Thiabendazole a major allergen?

Thiabendazole is not derived from any of the 14 major allergens that UK law requires to be emphasised on food labels.

What is Thiabendazole used for?

Thiabendazole is used as a post-harvest treatment to control fungal diseases on certain fruits, particularly citrus.

Is Thiabendazole safe?

Thiabendazole is authorised as a plant protection product (pesticide) in the UK and EU, not as a food additive.

Why it's used

Thiabendazole is used as a post-harvest treatment to control fungal diseases on certain fruits, particularly citrus. It helps to extend shelf life by preventing mould and rot. It is typically applied as a wax coating or dip.

Health notes

Thiabendazole is authorised as a plant protection product (pesticide) in the UK and EU, not as a food additive. Its use on food is regulated by pesticide residue limits. EFSA has evaluated thiabendazole in relation to pesticide residues. JECFA has also evaluated it and set acceptable residue limits. Concerns have been raised about potential endocrine disruption, but regulatory bodies consider it safe at permitted residue levels.

Allergen info

Thiabendazole is not derived from any of the 14 major allergens that UK law requires to be emphasised on food labels. Not a major allergen.

Foods that contain Thiabendazole

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Auto-generated content. This description was generated automatically and is pending editorial review. Inaccuracies are possible. Found a mistake? Contact us.

Last updated: 17 October 2026

Note: This site presents label data from Open Food Facts for general information. It is not medical advice. Check the package label; formulations change.